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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 108 (Engine Control System Diagnosis - 1.6L (2 Of 3) - Optima (Except HEV)) >> DTC P0504: Brake Switch "A"/"B" Correlation >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Plausibility check
  1. Poor connection
  2. Open or short in Stop lamp switch
  3. Faulty Stop lamp switch
Enable Conditions
  • Ignition On
Threshold Value
  • Time brake light switch/brake test switch do not correlate longer than 100 times
Diagnostic Time
  • -
MIL ON Condition
  • NO MIL
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